<?xml version="1.0" encoding="UTF-8"?>
<schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:swes="http://www.opengis.net/swes/2.0" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:sps="http://www.opengis.net/sps/2.0" targetNamespace="http://www.opengis.net/sps/2.0" elementFormDefault="qualified" attributeFormDefault="unqualified" version="2.0.0">
  <annotation>
    <documentation>
      SPS is an OGC Standard.
      Copyright (c) 2010, 2011 Open Geospatial Consortium, Inc. All Rights Reserved. 
      To obtain additional rights of use, visit http://www.opengeospatial.org/legal/ .
    </documentation>
  </annotation>
  <import namespace="http://www.opengis.net/gml/3.2" schemaLocation="http://schemas.opengis.net/gml/3.2.1/gml.xsd"/>
  <import namespace="http://www.opengis.net/ows/1.1" schemaLocation="http://schemas.opengis.net/ows/1.1.0/owsAll.xsd"/>
  <import namespace="http://www.opengis.net/swes/2.0" schemaLocation="http://schemas.opengis.net/swes/2.0/swes.xsd"/>
  <include schemaLocation="sps.xsd"/>
  <include schemaLocation="spsCommon.xsd"/>
  <!-- ================================================= -->
  <element name="DataAvailable" type="sps:DataAvailableType"/>
  <complexType name="DataAvailableType">
    <sequence>
      <element name="dataReference" maxOccurs="unbounded">
        <annotation>
          <documentation>group of (service) references with which the complete set of data gathered for a task can be retrieved</documentation>
        </annotation>
        <complexType>
          <sequence>
            <element ref="ows:ReferenceGroup"/>
          </sequence>
        </complexType>
      </element>
    </sequence>
  </complexType>
  <complexType name="DataAvailablePropertyType">
    <sequence minOccurs="0">
      <element ref="sps:DataAvailable"/>
    </sequence>
    <attributeGroup ref="gml:AssociationAttributeGroup"/>
  </complexType>
  <!-- ================================================= -->
  <element name="DescribeResultAccess" type="sps:DescribeResultAccessType" substitutionGroup="swes:ExtensibleRequest"/>
  <complexType name="DescribeResultAccessType">
    <complexContent>
      <extension base="swes:ExtensibleRequestType">
        <sequence>
          <element name="target">
            <annotation>
              <documentation>Pointer to either a task or procedure.</documentation>
            </annotation>
            <complexType>
              <sequence>
                <group ref="sps:TaskOrProcess"/>
              </sequence>
            </complexType>
          </element>
        </sequence>
      </extension>
    </complexContent>
  </complexType>
  <complexType name="DescribeResultAccessPropertyType">
    <sequence minOccurs="0">
      <element ref="sps:DescribeResultAccess"/>
    </sequence>
    <attributeGroup ref="gml:AssociationAttributeGroup"/>
  </complexType>
  <!-- ================================================= -->
  <element name="DescribeResultAccessResponse" type="sps:DescribeResultAccessResponseType" substitutionGroup="swes:ExtensibleResponse"/>
  <complexType name="DescribeResultAccessResponseType">
    <complexContent>
      <extension base="swes:ExtensibleResponseType">
        <sequence>
          <element name="availability">
            <annotation>
              <documentation>indicates that data is available or not</documentation>
            </annotation>
            <complexType>
              <sequence>
                <group ref="sps:AvailableOrNot"/>
              </sequence>
            </complexType>
          </element>
        </sequence>
      </extension>
    </complexContent>
  </complexType>
  <complexType name="DescribeResultAccessResponsePropertyType">
    <sequence minOccurs="0">
      <element ref="sps:DescribeResultAccessResponse"/>
    </sequence>
    <attributeGroup ref="gml:AssociationAttributeGroup"/>
  </complexType>
  <!-- ================================================= -->
  <element name="SPSMetadata" type="sps:SPSMetadataType" substitutionGroup="ows:AbstractMetaData">
    <annotation>
      <documentation>provides SPS specific metadata for (service) references given in a DescribeResultAccessResponse</documentation>
    </annotation>
  </element>
  <complexType name="SPSMetadataType">
    <sequence>
      <element name="dataAccessType" type="anyURI">
        <annotation>
          <documentation>Identifies the specification that defines the type of service/method used for accessing data.</documentation>
        </annotation>
      </element>
    </sequence>
  </complexType>
  <complexType name="SPSMetadataPropertyType">
    <sequence minOccurs="0">
      <element ref="sps:SPSMetadata"/>
    </sequence>
    <attributeGroup ref="gml:AssociationAttributeGroup"/>
  </complexType>
  <!-- ================================================= -->
  <element name="DataNotAvailable" type="sps:DataNotAvailableType">
    <annotation>
      <documentation>expresses that no data is available</documentation>
    </annotation>
  </element>
  <complexType name="DataNotAvailableType">
    <sequence>
      <element name="unavailableCode" type="sps:UnavailableCodeType">
        <annotation>
          <documentation>identifies the reason why data is unavailable</documentation>
        </annotation>
      </element>
      <element name="message" type="ows:LanguageStringType" minOccurs="0" maxOccurs="unbounded">
        <annotation>
          <documentation>human readable message that provides further information or reason why no data is available</documentation>
        </annotation>
      </element>
    </sequence>
  </complexType>
  <complexType name="DataNotAvailablePropertyType">
    <sequence minOccurs="0">
      <element ref="sps:DataNotAvailable"/>
    </sequence>
    <attributeGroup ref="gml:AssociationAttributeGroup"/>
  </complexType>
  <!-- ================================================= -->
  <group name="TaskOrProcess">
    <choice>
      <element name="task" type="anyURI">
        <annotation>
          <appinfo>
            <gml:targetElement>sps:Task</gml:targetElement>
          </appinfo>
          <documentation>Pointer to a task.</documentation>
        </annotation>
      </element>
      <element name="procedure" type="anyURI">
        <annotation>
          <appinfo>
            <gml:targetElement>unknown</gml:targetElement>
          </appinfo>
          <documentation>Pointer to a procedure tasked by the service.</documentation>
        </annotation>
      </element>
    </choice>
  </group>
  <complexType name="TaskOrProcessPropertyType">
    <sequence minOccurs="0">
      <group ref="sps:TaskOrProcess"/>
    </sequence>
    <attributeGroup ref="gml:AssociationAttributeGroup"/>
    <attribute name="unionSemantics" type="sps:TaskOrProcessUnionSemantics"/>
  </complexType>
  <simpleType name="TaskOrProcessUnionSemantics">
    <restriction base="string">
      <enumeration value="task"/>
      <enumeration value="procedure"/>
    </restriction>
  </simpleType>
  <!-- ================================================= -->
  <group name="AvailableOrNot">
    <choice>
      <element name="available">
        <annotation>
          <documentation>indicates that task data is available and contains (service) reference(s) to retrieve the data</documentation>
        </annotation>
        <complexType>
          <sequence>
            <element ref="sps:DataAvailable"/>
          </sequence>
        </complexType>
      </element>
      <element name="unavailable">
        <annotation>
          <documentation>indicates that data is not available and explains why it is not available</documentation>
        </annotation>
        <complexType>
          <sequence>
            <element ref="sps:DataNotAvailable"/>
          </sequence>
        </complexType>
      </element>
    </choice>
  </group>
  <complexType name="AvailableOrNotPropertyType">
    <sequence minOccurs="0">
      <group ref="sps:AvailableOrNot"/>
    </sequence>
    <attributeGroup ref="gml:AssociationAttributeGroup"/>
    <attribute name="unionSemantics" type="sps:AvailableOrNotUnionSemantics"/>
  </complexType>
  <simpleType name="AvailableOrNotUnionSemantics">
    <restriction base="string">
      <enumeration value="available"/>
      <enumeration value="unavailable"/>
    </restriction>
  </simpleType>
  <!-- ================================================= -->
  <simpleType name="UnavailableCodeType">
    <union memberTypes="sps:UnavailableCodeEnumerationType sps:UnavailableCodeOtherType"/>
  </simpleType>
  <simpleType name="UnavailableCodeEnumerationType">
    <restriction base="string">
      <enumeration value="DataNotAvailable">
        <annotation>
          <documentation>Result access information is not available because no data has been gathered yet.</documentation>
        </annotation>
      </enumeration>
      <enumeration value="DataServiceUnavailable">
        <annotation>
          <documentation>Result access information is not available because one or more of the services that are assigned to store the data gathered in a task is currently unavailable.</documentation>
        </annotation>
      </enumeration>
    </restriction>
  </simpleType>
  <simpleType name="UnavailableCodeOtherType">
    <restriction base="string">
      <pattern value="other: [A-Za-z0-9_]{2,}"/>
    </restriction>
  </simpleType>
</schema>
